🚀 go-pugleaf

I'd recommend looking at foley-van damm - fundamentals of computer graphics.


Slice wrote in message <01bcfa12$9879b680$60659dcc@richard>...
>    I'm having trouble with some 3D programming.  I'm sure its a well
>documented problem and would appreciate it if someone could email me the
>answer.  The Problem is that I don't know how to make it so that when I
>rotate a viewpoint, Pitch and Yaw still correspond to looking up or down
>and left or right.  For example, say I Roll 90 degrees.  This makes my
>Pitch and Yaw trade places... Pitch becomes Yaw and vice versa.  The Same
>scenario applies to pitching 90 degrees and trying to Yaw.  Yaw and Roll
>Switch Places.
>    The Other situation I have is translation of the Viewpoint responding
>to Yaw Pitch and Roll.    I want to be able to move the viewpoint forward,
>backward, up, down, left, and right (6 DOF), but When I roll 90 degrees,
>moving side to side becomes moving up and down... and pitching 90 degrees
>makes up-down and forward-backward switch places... while Yawing 90 Degrees
>switches left-right and forward-backward.
>
>I know the way to fix this has something to do with sin/cos and PI, but I
>can't figure it out.   If anyone has this information I would greatly
>appreciate it if you would email it to me at overman@wolfenet.com
>
>Thank You
>Richard L. Overman